UVI USQ-1 | Machine
The Ensoniq ESQ-1 is a special keyboard at UVI. Used by many on our team, including being a personal favorite of one of our founders, our USQ-1 had to be great. We’ve leveraged years of experience with this synth and put our hearts into creating a collection of sounds that we're proud of and that we’re sure you’ll enjoy.
UVI USQ-1 | Machine
Released in 1986, the Ensoniq ESQ-1 was one of the first affordably priced workstation-class keyboards on the market, combining an 8-voice, multitimbral digital/analog hybrid synthesizer and a featured 8-track sequencer. The ESQ-1's voice architecture allows customization of up to 3 digital oscillators, assignable to any one of 32 waveshapes, followed by a Curtis 4-pole 24dB/oct resonant low-pass analog filter and 15 routable modulation sources. The sound quality of the ESQ-1 is all-at-once digital, warm and unmistakably '80s - a true gem of the time whose sounds still ring with a brilliant depth and character.


USQ-1 offers 268 selectable layers made from over 22,000 samples. To showcase the sonic potential we've included 400 all-new patches including everything from rich bells, strings and leads to thick basses, textured pads and modulating atmospheres. The versatile design of the ESQ-1 allowed us to create both classic sounds that you’d expect from a vintage-era synth and also modern patches utilizing more contemporary sound design techniques. All-in-all these sounds ring with a special "vintage digital” vibe that synths of this era, and the ESQ-1 especially, do so well.
The sounds in USQ-1 are detailed and powerful. Every patch began with sound design on the original hardware and was recorded at our main studio through the highest-quality processors and converters available. You’re not just hearing the output jacks of the synth, the entire signal chain was thoughtfully considered to create a rich and professional "finished record" sound that’s both mix-ready and inspiring to play.
Included presets can easily be edited or you can build your own patches from scratch. Authentic sounds from the ESQ-1 are presented in a dual-layer architecture allowing for the design of two custom oscillators each with independent wave selection of 268 layers, ADSR amp, multi-mode filter with envelope, pitch, portamento, stereo, LFO, multi-step and modwheel modulation assignments and an arpeggiator. At the end of chain is a capable effect bus loaded with UVI’s own processors, including a 3-band EQ, drive, chorus (Thorus), phaser, delay and reverb (Sparkverb) all with excellent sound-quality and a featherlight CPU footprint.
  • UVI USQ-1 | Main
  • UVI USQ-1 | Edit
  • UVI USQ-1 | MOD
  • UVI USQ-1 | FX
  • UVI USQ-1 | ARP
USQ-1 delivers that vintage digital magic that we fell in love with over 30 years ago: a bold and inspiring collection of sounds combining modern sound design technique with an unmistakable '80s flavor.


Size: 6,72 GB (FLAC lossless encoding, was 12,69 GB in WAV)
Content: 400 Presets, 22 768 Samples
Sample Resolution: 44.1 kHz. Recording at 88.2 kHz
License: 3 activations per license on any combination of machines or iLok dongles
  • Runs in UVI Workstation version 2.6.15+, and Falcon version 1.4.1+
  • iLok account (free, dongle not required)
  • Internet connection for the license activation
  • Supported Operating Systems:
    - Mac OS X 10.8 to macOS 10.14 Mojave (64-bit)
    - Windows 8 to Windows 10 (64-bit)
  • 7 GB of disk space
  • Hard Drive: 7,200 rpm recommended or Solid State Drive (SSD)
  • 4GB RAM (8 GB+ highly recommended for large UVI Soundbanks)
Supported Formats: Audio Unit, AAX, VST, Standalone
Tested and Certified in: Digital Performer 8+, Pro Tools 11+, Logic 9+, Cubase 7+, Nuendo 6+, Ableton Live 8+, Studio One 2+, Garage Band 6+, Maschine 1+, Tracktion 4+, Vienna Ensemble Pro 5+, Reaper 4+, Sonar X3+, MainStage 3, MuLab 5.5+, FL Studio, Bitwig 1+, Reason 9.5+



USQ-1 | Jordan Rudess
"USQ-1 is a totally cool synth. It’s filled with classic sounds as well as magical sounds that sparkle and shine with loads of character. USQ-1 is sonic gold!"
Jordan Rudess | Keyboardist & Composer
(Dream Theater, Liquid Tension Experiment)
USQ-1 | Sam Fisher
"UVI has brought back a unique synth of lush sound and major improvements. Few synths have the sound, features and filters like these. To UVI: You guys did it again! My respects."
Sam FISH Fisher | Multi Grammy Certified Record Producer/Songwriter & Musician
(Daddy Yankee, Lady Gaga, Celia Cruz, Duran Duran, Vico C, Fey,…)
USQ-1 | Electronic Musician
"USQ-1 — especially in the context of UVI Falcon — is a terrific sounding, powerfully expressive synthesizer that will add intriguing colors to your synth mixes."
USQ-1 | Audio Plugin Guy
"There’s enough awesomeness packed into USQ-1 to keep you happy for a while. It can provide many parts for a piece of music from the bassline up."
USQ-1 | Matt Creamer
“It’s got some grit! It’s the character you’re going for here, and UVI have captured it. And there’s a ton of presets!”
USQ-1 | SoundBytes
"USQ-1 has that classic sound and a few extras under the hood."
USQ-1 | Supreme Lord Commander
UVI USQ-1 Review and Demonstration
USQ-1 | Strong Mocha
"UVI has elegantly simplified the UI to make the instrument highly accessible and quick to use."

User Testimonials

“While browsing the presets discovered a voicing/timbre I've been searching for in one of my current projects. I can't tell you how deep the feeling of nostalgia I felt reached, but I just tapped into something that this song and the iconic sound of the ESQ-1 gave me.”Lewi G.
“The sound is excellent, the controls are comfortable. Very like the built-in presets, but the possibilities for сreate their your own are really limitless. I recommend!”Saw, KVR
“I can confirm that I absolutely LOVE it. Well done guys.”Michael O., Facebook
“It sounds great. USQ-1 offers quite a bit of options to create your own patches. I have to say that i am quite impressed by those raw sounds.”Ingonator, KVR
“If you're looking for a plugin version of this classic cult synth, UVI has a great one here.”Janievemusic, YouTube
“Sounds much better than my old original.”Holger K., Facebook
“I have to say I really like it. Dead easy to get new sounds and you can get polyrhythmic stuff out of the arps and mods. Made 6 new patches in a matter of minutes. Well done UVI.”Fans, KVR
“It sounds AMAZING!”Jason M., Facebook
“It’s very good. Lots of control, nice sounding filter, great fx.”SLiC, KVR
“Just got it and I love it!”Danny K., Facebook
“USQ-1 is great!”Saukar M., Facebook
“It sounds great.”Squeegee 303, Gearslutz
Ensoniq and ESQ-1 are trademarks of their respective owners. UVI is not affiliated or endorsed by any entities listed here.
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